Colorado 2WD L5-3.5L VIN 6 (2005)
Sunroof / Moonroof Panel: All Technical Service Bulletins
Body -Water leaks/ Wind Noise From The Sunroof
Bulletin No.: 07-08-67-001A
Date: January 18, 2008
TECHNICAL
Subject:
Sunroof Leaks Water Wind or whistle Noise from Sunroof (Determine Source of Leak and Apply Sealer)
Models:
2005-2008 Chevrolet Colorado
2005-2008 GMC Canyon
with RPO CF5 Sunroof
Supercede:
This bulletin is being revised to add the 2008 model year and update the information. Please discard Corporate Bulletin 07-08-67-001 (Section 08 -
Body & Accessories).
Condition
Some customers may comment on water entering into the vehicle from the sunroof area. Other customers may comment on a wind noise or whistle noise
heard from the sunroof area when driving at different speeds.
Design
The sunroof module is designed by Webasto. The sunroof module is designed to be completely sealed at the roof panel to help prevent water from
traveling past the glass panel seal. The sunroof glass assembly does not have any glass panel adjustments The sunroof assembly does not contain a water
management drain tube system. when operating the sunroof the glass panel moves rearward and slides up above the roof panel. Therefore the vehicle
must be driven or the exterior dried off sufficiently to remove excessive water prior to opening the sunroof glass. If the water is not sufficiently
dissipated some water may enter inside the vehicle.
Cause
Some earlier built vehicles with the sunroof option did not have any adhesive sealer installed on the upper sunroof frame assembly.
Wind or Whistle Noise Test Procedure
Determine the source of the wind or whistle noise. Refer to Air/Wind Noise in SI.
Water Hose Test Procedure
Perform a water hose test to determine where the leak is entering the sunroof assembly.
Use a water hose without the nozzle attached at a controlled medium volume water flow.
